Taichi Mashima (from Chihayafuru)
Admittedly, in the beginning he wasn't exactly the best character. However, as the show goes on, you can see Taichi mature and come into his own. He's a hard worker, and this is especially true when it comes to Karuta. He...isn't exactly talented when it comes to Karuta, but that doesn't mean that he's horrible at it either. A true jack of all trades, master of none. Despite not having a particular skill that he believes to be the best, he still works hard towards his goal. He's also a bit of a tragic character because he is so close to the girl that he loves, but unwilling/unable to tell her how he feels. This is mostly due to his imposing some set of rules on himself with regard to what he should/shouldn't do. His self doubt is probably going to lead to him "losing" when it comes to this triangle. Though, this is one of the reasons I like his character. He comes off as a someone who is perfect, but is actually far from it. He's confident, but there are times where he isn't. He often requires a push/kick in the right direction.
Mutta Nanba (from Uchuu Kyoudai)
I'm still behind on this show....But he's still one of my favorite characters. He's a 30 something year old character, who is attempting to become an astronaut. It was a dream that he once chased with his brother when they were younger, however he ultimately gave up on it. Believing it to be impossible for him (part of this was due to the fear of having his younger brother jump ahead of him since his grades skyrocketed, while his remained the same(he had this thing about older brothers always being a step ahead of their younger brothers))
. However, after receiving a push from his brother (who is now an astronaut), he finally moves towards his dream. He's easily discouraged, and believes that he is destined to be unlucky. Despite that though, he still trudges forward. Other things that I like about him are his inner monologues and facial expressions. They're pretty hilarious and entertaining.
EDIT: @Mr. Sefrol I'm glad that I could help c: I meant to post sooner, but it kept slipping my mind, my bad